Pump



E. C. CUMMINGS.

PUMP.

APPLICATION FILED DEC. I3, I92I.

Patented July 25,

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PUMP.

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To aZZwtom t may concern.'

` Be it known thatl, EvnnnTrC. CUMMINGS, a citizen 'of the United States, anda resident oa-Electra, in the county loit' Wichita and State of Texas, have invented new and useful Improvements in Pumps, of which the following is a full, clea'kr,landl exact description.v Y

This invention relates to'improvements in pumps particularly designed for use in loil wells. i

Prior to this invention, in using pumps in `wells where there was a certain amount of sand, 'considerable difficulty was experienced from the :tact that the lower barrell valve became packedwith sand which caused it to stick. Y l f v The general object of thepinvention isthe provision'of an elicient pump having means for `protecting the barrel valve from being sanded, means for preventing the flow of sand into the upper end offthe barrel, and meansfor allowingfor displacement of the liquidbetween the plunger and the means for preventing the -flow of sand into the upper end of ther barrel.

This object is accomplished by providing means in conjunction with the pump plunger which co-operates with the barrel valve to protect the later from sand and interposing between-the barrel and polish rod means for preventing the flow of sand or the like l into the upper end ofthe barrel and connectdisplacementof liquid. n This 4and other objects oi the invention will be more clearly understood from the following vdetailed description Aand accompanying drawings.

Figure 1 is a vertical cross section through the upper portion of the pump, showing the swaged bushing and the arch connected to the barrel; y i

Figure 2 is a verticalcross section through a portion of the barrel, showing the upper end of the plunger; n p

Figure 3 is a vertical cross sectionthrough the lower end of the pump, showing the barrel valve and the means in conjunction with the plunger for protecting the barrel valve;

Figure 4: is a side elevation of the protecting shield mounted over the displacement arch;

ing to the barrel means which allows forthe Specification or Letters Patent.

Patented July 25, ieee.

Application mea neeemteris, 192i. ,serial No. 522,098. f'

' Figure 5 is a cross section along the line 5-5, Figure 1.

' eerring to the above-mentioned drawings, a barrel 10 is provided in which' the plunger 11, having a polished rod 12 connected thereto, is slidably mounted. The polish rod 12 is hollow and has a ball valve 13 mounted on its upper end. The lower end of the polish rod 12 is'threaded and has two Vopenings 14- and 15 extending therethrough. A bushing 16,7 which is provided with an internal thread,vis mounted on the lower threaded end of the polish rod. lThe plunger 11 is connected to the bushing -16 by-means of screws 17. 'The lowerl end 18 of the plunger 11 is cup-shaped so `that it willyfit over the cage 19 yof a ball valve 20 which is-mounted inthe lower end of the barrel 10. The ball -valve 20, which is mounted in the lower end of the barrel 10, seats on a number of leather rings 21 and is provided with alpipe 22threaded at its lower end and extending through the leather rings, the threaded portion engaging a disk 23. 'A garbutt rod 26,is connectedjto'the cage 19 of the ball valve 20 and extends upward through the hollow polish rod 1,2. The lower end of thelbarrel 10 is connected to ascreening member 211'by l'means offa coupling 25. f

A swaged bushing 27 ismounted inthe upper end'o'f the barrel 1 0 and provided with lan opening 28 through' which the polish rod 12 slides. This bushing closes'the space between the barrel 10 and the polish rod 12 and prevents the flow of sand or the like into the upper end of the rbarrel 10. Altul ing 29 is connectedA to the upper end of the 'barrel 10 by means ofa coupling 30. An arch 31 vhasa leg 32 connectedto the coupling and'extending through itswall at a point above the bushing 27, and the leg 33 is connected to the 'barrel and extends through an opening 34 in the wall of the barrel '10'at a point below the bushing'27.` A'shield'35 is supported onjthebarrel 10 and the tubing 29 to protect the arch 31. 5

The valve 13, which [is mounted4 on the upper end of the kpolish rod 12, is provided with a threaded nipple 36 for attaching to means for opera-ting the plunger 11. T-his plunger 11 is provided with a plurality of compression grooves 37.

The operation of the device is as lollows:

Normally the lower portion 18 ot the plunger 11 seats over the valve cage 1t) and protects the valve 20 from sand that may settle down in the barrel. It the plunger 11 is drawn upward by the operation oit the po-lish rod 12 it receives the pressure from the top of the valve 2O and liquid Hows in through the screen member 24, up through pipe 22, valve 2O and into the barrel 10. The liquid between the plunger 11 and the bushing 27 is forced through the opening 34, legs 33 and 32 ot the arch 3], into the tubing 29 upon the upstroke of the plunger 11. This causes a continuous agitation ot' the liquid in the arch and the sand is prevented from enteringthe upper end ot the barrel 10 by the bushing 27.

On the down stroke et the plunger 11 the liquid passes through the openings 14; and 15 into the polish rod 12 through the valve 13 into the tubing 29. The liquid in the arch on the same stroke Hows from the tubing through the legs 82 and oit the arch 3l into the barrel through the opening 34. A certain amountot liquid collected in the tubing 29 is forced out on the upstroke of the plunger.

The chief advantage gained from the cup-shaped portion 18 of the plunger 11 is that upon the severing ot the rods by which the plunger is operated it seats over the valve cage 19 and prevents sand from packing about the valve so as to prevent its operation.

I would state in conclusion that while the illustrated example constitutes a. practical embodiment of my invention I do not limit myself strictly to the exact details herein illustrated since manifestly the same can be considerably varied without departing from the spirit of the invention as dened in the appended claims.

Claims.

1. A pump of the class described, comprising a barrel, a plunger slidably mounted in the barrel, a valve located near the lower end of the barrel, a polish rofl attached to the plunger for operating it, a valve located near the upper end of the polish rod, and means in conjunction with the plunger for enclosing the barrel valve to protect it from being packed with sand when the pump is not in opera-tion.

A pump of the class described, comprising a barrel having a valve located near its lower end, a plunger rotatably mounted in the barrel and having a polish rod connected thereto for operating it, a valve lo cated in the upper end ot the polish rod and a cup-shaped member depending from the plunger and shaped to enclose the barrel valve to protect the latter 'from being packed with sand when the pump is not in operation.

3. A pump oit the class described, compris ing a barrel and having a valve located near its lower end, a plunger having a polish rod connected thereto slidably mounted in the barrel, means in conjunction with the plunger for protecting the barrel valve, a garbutt rod connected to the barrel valve and eX- tending through the plunger to serve as a means for removing said barrel valve, a second valve mounted on the upper end of the polish rod, and a swaged bushing interposed between the barrel and polish rod to prevent the flow of sand or the like into the barrel.

4. A pump of the class described comprising a barrel having a valve located near its lower end, a plungerhaving a polish rod connected thereto slidably mounted in the barrel, means interposed between the polish rod and barrel for preventing the flow of sand or the like into the barrel from the upper end, means in conjunction with the plunger for protecting the lower valve from being packed with sand, and an arch adapted to allow for displacement of liquid between the plunger and the means interposed between the polish rod and the barrel, one leg of said arch being connected to the barrel below the said means while the other leg is connected to the barrel above said means.

5. As a new article ot' manufacture, a pump of the class described comprising a barrel having a valve located near its lower end, a plunger having a polish rod connected thereto slidably mounted in the barrel, a valve located on the upper end of the polish rod, means in conjunction with the plunger for protecting the barrel valve from being packed with sand, means interposed between the barrel and polish rod for preventing the flow o'l' sand into the upper end of the barrel, means for allowing Jor the displacement oi' liquid between the plunger and means interposed between the barrel and polish rod, and a shield ttor protecting said displacement means.

G. As a new article ot manufacture, a pump oit the class described comprising a barrel having a valve mounted therein near its lower end, a plunger having a polish rod connected thereto slidably mounted in the barrel, a garbutt rod connected to the barrel valve and extending upward through the polish rod, a ewa-ged bushing mounted 1n the barrel and havingr an opening therein through which the polish rod slides, an arch, one leg of which is connected to the barrel below the swaged bushing while the other leg is connected to the barrel above said bushing, a shield for protecting said arch, and a valve mounted on the upper end ot said polish rod.

7. As a new article of manufacture, a pump of the class described comprising a barrel having a valve mounted therein near its lower end, a plunger having a polish rod connected thereto slidably mounted in the barrel andr having a cup-shaped portion formed on its lower end for the protection of the barrel valve from being sanded, a garbutt rod connected to the valve and eX- tending upward through the polish rod, a swaged bushing mounted in the barrel and havlng an opening extending therethrough through which the polish rod slides, a Valve mounted on the an arch having one leg connected to the bar? upper end of the polish rod,

swaged bushing sa1d arch.

, and a shield for protecting EVERETT CUSHMAN CUMMINGS. 

